for i in range(1000, 10000):
    qw = i // 1000 % 10
    bw = i // 100 % 10
    sw = i // 10 % 10
    gw = i // 1 % 10
    if i * 9 == gw * 1000 + sw * 100 + bw * 10 + qw:
        print(i)

/**************************************************************
	Problem: 1264
	User: admin
	Language: Python
	Result: Runtime Error
****************************************************************/